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cpupower: Introduce idle state disable-by-latency and enable-all 

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Thomas Renninger 2014-05-13 12:41:41 +02:00 committed by Rafael J. Wysocki
parent 706f4c1100
commit 69cd502dd8
2 changed files with 77 additions and 8 deletions
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10
tools/power/cpupower/man/cpupower-idle-set.1
View File

@ -13,11 +13,17 @@ sleep states. This can be handy for power vs performance tuning.
.SH "OPTIONS"
.LP
.TP
\fB\-d\fR \fB\-\-disable\fR
\fB\-d\fR \fB\-\-disable\fR <STATE_NO>
Disable a specific processor sleep state.
.TP
\fB\-e\fR \fB\-\-enable\fR
\fB\-e\fR \fB\-\-enable\fR <STATE_NO>
Enable a specific processor sleep state.
.TP
\fB\-D\fR \fB\-\-disable-by-latency\fR <LATENCY>
Disable all idle states with a equal or higher latency than <LATENCY>
.TP
\fB\-E\fR \fB\-\-enable-all\fR
Enable all idle states if not enabled already.
.SH "REMARKS"
.LP

75
tools/power/cpupower/utils/cpuidle-set.c
View File

@ -13,8 +13,14 @@
#include "helpers/sysfs.h"
static struct option info_opts[] = {
{ .name = "disable", .has_arg = required_argument, .flag = NULL, .val = 'd'},
{ .name = "enable", .has_arg = required_argument, .flag = NULL, .val = 'e'},
{ .name = "disable",
.has_arg = required_argument, .flag = NULL, .val = 'd'},
{ .name = "enable",
.has_arg = required_argument, .flag = NULL, .val = 'e'},
{ .name = "disable-by-latency",
.has_arg = required_argument, .flag = NULL, .val = 'D'},
{ .name = "enable-all",
.has_arg = no_argument, .flag = NULL, .val = 'E'},
{ },
};
@ -23,11 +29,13 @@ int cmd_idle_set(int argc, char **argv)
{
extern char *optarg;
extern int optind, opterr, optopt;
int ret = 0, cont = 1, param = 0, idlestate = 0;
unsigned int cpu = 0;
int ret = 0, cont = 1, param = 0, disabled;
unsigned long long latency = 0, state_latency;
unsigned int cpu = 0, idlestate = 0, idlestates = 0;
char *endptr;
do {
ret = getopt_long(argc, argv, "d:e:", info_opts, NULL);
ret = getopt_long(argc, argv, "d:e:ED:", info_opts, NULL);
if (ret == -1)
break;
switch (ret) {
@ -53,6 +61,27 @@ int cmd_idle_set(int argc, char **argv)
param = ret;
idlestate = atoi(optarg);
break;
case 'D':
if (param) {
param = -1;
cont = 0;
break;
}
param = ret;
latency = strtoull(optarg, &endptr, 10);
if (*endptr != '\0') {
printf(_("Bad latency value: %s\n"), optarg);
exit(EXIT_FAILURE);
}
break;
case 'E':
if (param) {
param = -1;
cont = 0;
break;
}
param = ret;
break;
case -1:
cont = 0;
break;
@ -79,8 +108,14 @@ int cmd_idle_set(int argc, char **argv)
if (!bitmask_isbitset(cpus_chosen, cpu))
continue;
switch (param) {
if (sysfs_is_cpu_online(cpu) != 1)
continue;
idlestates = sysfs_get_idlestate_count(cpu);
if (idlestates <= 0)
continue;
switch (param) {
case 'd':
ret = sysfs_idlestate_disable(cpu, idlestate, 1);
if (ret == 0)
@ -107,6 +142,34 @@ int cmd_idle_set(int argc, char **argv)
printf(_("Idlestate %u not enabled on CPU %u\n"),
idlestate, cpu);
break;
case 'D':
for (idlestate = 0; idlestate < idlestates; idlestate++) {
disabled = sysfs_is_idlestate_disabled
(cpu, idlestate);
state_latency = sysfs_get_idlestate_latency
(cpu, idlestate);
printf("CPU: %u - idlestate %u - state_latency: %llu - latency: %llu\n",
cpu, idlestate, state_latency, latency);
if (disabled == 1 || latency > state_latency)
continue;
ret = sysfs_idlestate_disable
(cpu, idlestate, 1);
if (ret == 0)
printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu);
}
break;
case 'E':
for (idlestate = 0; idlestate < idlestates; idlestate++) {
disabled = sysfs_is_idlestate_disabled
(cpu, idlestate);
if (disabled == 1) {
ret = sysfs_idlestate_disable
(cpu, idlestate, 0);
if (ret == 0)
printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu);
}
}
break;
default:
/* Not reachable with proper args checking */
printf(_("Invalid or unknown argument\n"));